From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B058137418D for ; Thu, 26 Feb 2026 04:15:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772079345; cv=none; b=qkxPpHPjBMG1ZgYXJKJuDuvKBjTXta1BkjhYqYpDSk/6Y+KkjaAl1RTodSzziegb9qjmQsDe+xI5gscN7d1zx9J9I52hq7IOrCgkPV5xJqUeJ3Ig3KDFs6SkiBtQ92Unv3oL3+WdEXVumyfK70a9D5gbBHLIJhzOevAOeUKO3k8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772079345; c=relaxed/simple; bh=gfksIiGZJ302/W+L0dS66QU3mYT6wSH5MOhEaecZftw=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ML7RiN2nr1xVEqJjrWPaZzk7LbMfOF8KybrQUDJRt5Nl3gxnOBBxZfYXI5wvAuf7XKoSr8intMPxC2a4uG4fhI/wa7RXgiOo4NJQTCqCoIQrj5umIQiasUBk2d+NNiQ1IUsEL2xxcS4/sQ96UvbCj40VHNrhHPjPpYt7Jkgln28= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sLcaCq14; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="sLcaCq14" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3BCB7C2BC86; Thu, 26 Feb 2026 04:15:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772079345; bh=gfksIiGZJ302/W+L0dS66QU3mYT6wSH5MOhEaecZftw=; h=From:To:Subject:Date:In-Reply-To:References:From; b=sLcaCq14nD9G9Huv4DggOpWm6R9lLRZTddEe71aoEF7TisjXAo3M4d52NMozL5zEv Lb9Qwl8nFTbXHhmxkbu3lewLH92dLiKCPpN2A31JWIE7aUDo4GNZ/flfGN72ku+jc6 OSOBTIa7zwLgYqmKWRWOAvF/fSMNgUiTVtkcXiwm3i05Nz5BzYq6KqxfX0pb7SWlFu 3s0nyiliCQzCrV1DiJfPFTNHtVai1DozquSuq950D0E4/KifoxsSYgTyEHH5LNM5e0 /PllaHQZTuDd8cMtR6sFOVsDXLSa1yGVOgtEUmEhxNVafr/YTJtci8PSI+92v5SJxi cNWIzHeZOhSgQ== From: Damien Le Moal To: Jens Axboe , linux-block@vger.kernel.org Subject: [PATCH v2 7/7] Documentation: ABI: stable: document the zoned_qd1_writes attribute Date: Thu, 26 Feb 2026 13:10:24 +0900 Message-ID: <20260226041024.2154806-8-dlemoal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260226041024.2154806-1-dlemoal@kernel.org> References: <20260226041024.2154806-1-dlemoal@kernel.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Update the documentation file Documentation/ABI/stable/sysfs-block to describe the zoned_qd1_writes sysfs queue attribute file. Signed-off-by: Damien Le Moal Reviewed-by: Hannes Reinecke --- Documentation/ABI/stable/sysfs-block | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index 09a9d4aca0fd..bc3056af5eb2 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -886,6 +886,21 @@ Description: zone commands, they will be treated as regular block devices and zoned will report "none". +What: /sys/block//queue/zoned_qd1_writes +Date: January 2026 +Contact: Damien Le Moal +Description: + [RW] zoned_qd1_writes indicates if write operations to a zoned + block device are being handled using a single issuer context (a + kernel thread) operating at a maximum queue depth of 1. A value + of 0 is always reported for regular block devices and for zoned + block devices that are not rotational devices (e.g. ZNS SSDs or + zoned UFS devices). For rotational zoned block devices (e.g. SMR + HDDs) the default value is 1. Since this default may not be + appropriate for some devices, e.g. remotely connected devices + over high latency networks, the user can disable this feature by + setting this attribute to 0. + What: /sys/block//hidden Date: March 2023 -- 2.53.0